<template>
    <view class="cart-container" v-if="cart.length !== 0">
        <my-address></my-address>
        <!-- 购物车商品列表的标题区域 -->
        <view class="cart-title">
            <!-- 左侧的图标 -->
            <uni-icons type="shop" size="18"></uni-icons>
            <!-- 描述文本 -->
            <text class="cart-title-text">购物车</text>
        </view>
        <!-- uni-swipe-action 是最外层包裹性质的容器 -->
        <uni-swipe-action>
            <!-- 商品列表区域 -->
            <block v-for="(goods, i) in cart" :key="i">
                <uni-swipe-action-item :options="options" @click="swipeActionClickHandler(goods)">
                    <my-goods :goods="goods" :show-radio="true " :show-num="true" @radio-change="radioChangeHandler"
                        @num-change="numberChangeHandler"></my-goods>
                </uni-swipe-action-item>

            </block>
        </uni-swipe-action>

        <!-- 结算区域 -->
        <my-settle></my-settle>
        
    </view>
 <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
        <image src="/static/cart_empty@2x.png" class="empty-img"></image>
        <text class="tip-text">空空如也~</text>
    </view>

   

</template>

<script>
    import {
        mapGetters,
        mapState,
        mapMutations
    } from 'vuex'
    import badgeMix from '@/mixins/tabbar-badge.js'


    export default {
        mixins: [badgeMix],

        computed: {
            ...mapState('m_cart', ['cart']),

        },
        data() {
            return {
                option: [{
                    text: '删除', // 显示的文本内容
                    style: {
                        backgroundColor: '#C00000' // 按钮的背景颜色
                    }
                }]
            }
        },

        onShow() {
            // 在页面刚展示的时候，设置数字徽标
            this.setBadge()
        },
        methods: {
            ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
            radioChangeHandler(e) {

                this.updateGoodsState(e)
            },
            // 商品的数量发生了变化
            numberChangeHandler(e) {
                this.updateGoodsCount(e)
            },
            // 点击了滑动操作按钮
            swipeActionClickHandler(goods) {
                this.removeGoodsById(goods.goods_id)
            },

        }
    }
</script>

<style lang="scss">
    .cart-container {
        padding-bottom: 50px;
    }

    .cart-title {
        height: 40px;
        display: flex;
        align-items: center;
        font-size: 14px;
        padding-left: 5px;
        border-bottom: 1px solid #efefef;

        .cart-title-text {
            margin-left: 10px;
        }
    }

    .goods-item {
        // 让 goods-item 项占满整个屏幕的宽度
        width: 750rpx;
        // 设置盒模型为 border-box
        box-sizing: border-box;
        display: flex;
        padding: 10px 5px;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .empty-cart {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding-top: 150px;
    
      .empty-img {
        width: 90px;
        height: 90px;
      }
    
      .tip-text {
        font-size: 12px;
        color: gray;
        margin-top: 15px;
      }
    }
</style>